Alright, here is my second attempt at Lak'Zal's background story:
Snow fell outside a rocky cave of Dun Morogh as the cries of baby and mother alike were heard, followed by a yell of "Shut up, runt!" Inside the cave, there was a troll woman lying on her back, firmly clasping a new-born in her arms, teal skin and strands of white hair, just like most of the trolls in the cave. The angry father wrestled the child from the mother's arms and looked as though he was about to hit it, the child looked slim and fragile while the father was burly and strong. The child kept crying as his father raised a hand to smack the child, a large smack was heard but the child remained unharmed, the father has a red hand mark on his face, the mother standing weakly with her hand raised.
Troll onlookers outside the cave heard a fierce yell from a troll berserker and saw two trolls, a grown woman and a newborn baby, get tossed out of the cave, the baby began to bawl again as the cold hit it fully for the first time. The woman and her child found shelter under a nearby rock to cover for the night. The child, whom she had decided to name "Lak'Zal", slept soundly that night, undisturbed by the bangs, bumps and disturbances of the troll camp during the night.
Years pass and the child kept his slender, fragile body while most other trolls began to develop muscle and started to handle weapons already. Lak'Zal seemed to prefer learning about the world, the Loa and these odd race that he had heard whispers of, the race bearing the name of "Dwarves". There were few women in the tribe at this time so all of Lak'Zal's siblings were only half-siblings, his father's children all being illegitimate. His own mother was still alive during these years, accepting Lak'Zal for who he was and, unlike his father, not wanting him to be the usual burly troll berserker. Lak'Zal spent more time with his mother than any other troll in the tribe.
One more year passed and something happened to change Lak'Zal again. He and his mother went out for a wander through a cave. They got to the end and a dwarven cannon went off, hitting the top of the cave and causing a cave-in. Lak'Zal and his mother ran as fast as they could, and though Lak'Zal's mother was faster than him, only he made it out, his mother had grabbed him and thrown him out of the cave, she was crushed by the falling rocks herself. Lak'Zal waited outside that cave all night as the snow fell and more blasts went off from these dwarven "rifles" and cries of wolves, snow leopards boars and bears were heard from afar. Lak'Zal grew in rage as the night passed, hearing these cries of pain, each cry seeming to him worse than the last. It made him think; "If only i could stop this death from happening...If only I could heal their wounds"
Lak'Zal made it his life's work from that day to find a way of healing the wounded and stopping the dying from reaching their fate. Years passed with no resolve, Lak'Zal didn't give up, he carried on, asking troll after troll if they had heard of such arts, most berserkers replied with "Heal the dying? Why would you want to do that?" Even his father would not help him, replying with; "Out of my sight, runt" Lak'Zal reached his late teens before he finally came across a troll "Witch Doctor", this troll claimed that he could heal the wounded, treat the sick and had a cure for all ills. Lak'Zal followed the path of the Witch Doctor, worshipping the Loa "Vrakun" and learning to pick and mix herbs to make effective "potions". Two years later Lak'Zal took his rite into adulthood.
The rite came and Lak'Zal had no idea what was in store for him, he was not a warrior like others but now an apprentice Witch Doctor which had grown in number but were still few. His father came up to him with a huge sword, Lak'Zal had never seen a blade of such size, his father slashed him across the chest with it and gave him one simple command "Don't die". Lak'Zal felt pain and shock surge through him like a bolt of lightning and could feel the blood flowing out from his chest, there were trolls watching him, doing nothing to help him, none even showing concern. Behind the head of his father he saw something that made him freeze, he saw a vision of his mother by his shoulder. This sight soothed him, made him feel in a little less pain. His mother mouthed the words of his father "Don't die". With shaky hands, Lak'Zal grabbed his bandages from a pouch next to him and wrapped them around the wound before splashing a potion over them. He felt even more pain surge through his chest as this potion took effect, the signal that he knew it had worked. He felt faint, dizzy. He called to Vrakun for aid and felt his hands tingle, he placed his glowing green hands to his chest and the wound thinned, leaving a scar instead of a gouge. He had passed his rite and went to his father's cave, collapsing onto the nearest patch of snow.
He woke up the next day to see his father staring down at him, he grunted "Good work, runt, you're an adult now, so get the hell outta my cave." Lak'Zal snarled and gave his father a quick glare before departing from the cave. He now had duties to the tribe to tend to the wounded and the sick, he shared residence with one of his half-brothers and in return, gave him priority of healing over the rest of the tribe bar the chieftain, though he was not trusted enough to heal the chieftain at this age. He carried out his duties and kept to himself a lot, only conversing with people when he had to.
Many years passed and he became more confident within the tribe, yet became more and more like his father, disregarding other trolls' well-being. He was required to mate to keep his line going so he was set with a mate that was more burly than most, that being rare in these times. He mated with this troll which bore his first son, Mezil'Zal. The mother died at birth and Lak'Zal coldly pried his son from the troll's hands. This troll was unlike Lak'Zal, it being of a burlier build from birth rather than Lak'Zal's slender, fragile build that he has retained throughout his life, this troll has grown up to be a fighter within the Frostmanes, not following in his father's path.
One more year passed and Lak'Zal was made to mate again, this troll being of a more slender build like himself, he had hoped for a son to carry on in his Witch Doctor name but was given a daughter who excelled in speed and agility, spying on people and lurking in the shadows, he named this daughter "Alunja'Zal".
Many years passed and Lak'Zal's hair grew long and ever whiter, his vision began to fade and his skin started to seep and become wrinkly. His vision is not completely lost but is weaker than that of most. He has come to use a staff to help him walk and his son, Mezil'Zal helps him with his alchemy, helping him find his ingredients and read labels on bottles. He has become a fully fledged Witch Doctor and specialises in the healing arts, his son aspiring to be a berserker and his daughter becoming a scout with a past of thievery from the dwarves.
(Hope it's long enough this time
I didn't put in much about the son and daughter because they have the stories in their own applications)